Program Archives
 Welcome to the TI-Basic Developer (TI|BD) Program Archives! We have a large variety of programs available for download, with program filtering and sorting based on genre and metadata, and will accept nearly any programs that you want to add to our archives. If you have questions, leave a post on the forums or read the FAQ. Happy gaming!

## Trigonometry Tools

Tools to help in your Geometry or Trigonometry class, solving anything to do with triangles.

## Prisms

A 3D engine that draws rectangular prisms (any size, solid or transparent) on the graph screen using pseudo-one-point perspective. Also includes Cubes, a simple program that shows what it is capable of.

## Drifter

Drifter is a game in which you slide until you hit an object.
There are many pieces that you will come in contact with that change the direction you're going.
Collect all the +s and/or numbers 1-9 then reach the flag to win.
Drifter includes 16 levels and a custom level editor for endless hours of fun.

## Lingo

This program will simplify nearly any radical expression in the form of the nth root of x by removing the perfect n factors from under the radical.

This program features very fast load times, index reduction, and imaginary simplifications.

## Binary Converter

A simple conversion system between bases 10 and 2.

## Geometric Sequence

With the input of any two terms of a geometric sequence, and a desired term, the user can receive two outputs: the value of the desired term, and the sum of all terms from the first term to that one. For example: if you only knew the first and the third terms of the geometric sequence 1,2,4,8, and you wanted to find the fourth, you would first enter 1 and 3 for first and third terms, and then their respective values, 1 and 4. Then you would enter the term you wanted, 4 for fourth term, and two numbers would be displayed: 8 (the fourth term) and 15 (1+2+4+8).

## Solitaire Encryption

This is the Solitaire Encryption algorithm that Bruce Schneier made for Neal Stephenson's book Cryptonomicon. Before, only a TI89 version of the program existed. This is for the TI83/84s. Give your calc some time, and eventually something will come out encrypted/decrypted. The outputs are stored in Str1 and the decryption deck is stored in ∟DDECK.